Hydraulic Efficiency of Grate and Curb Inlets - Urban Drainage and ...

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Test ID Number Depth (ft) Grates Flow Efficiency (cfs) Observed Regression UDFCD New 107 0.333 3 3.59 0.74 0.87 0.91 108 0.501 3 13.41 0.50 0.57 0.81 109 0.999 3 108.34 0.43 0.21 0.46 152 0.333 3 13.09 0.43 0.51 0.48 153 0.501 3 31.02 0.29 0.32 0.49 154 0.999 3 177.70 0.18 0.15 0.17 155 0.333 3 7.79 0.74 0.65 0.73 156 0.501 3 22.13 0.44 0.42 0.61 157 0.999 3 163.21 0.19 0.16 0.24 233 0.333 3 12.63 0.41 0.52 0.50 234 0.501 3 38.19 0.25 0.28 0.39 235 0.999 3 146.84 0.18 0.17 0.27 236 0.333 3 8.42 0.74 0.61 0.70 237 0.501 3 25.72 0.42 0.38 0.53 238 0.999 3 128.60 0.20 0.19 0.37 146
Test ID Number Table H-2: Type 16 combination-inlet calculated efficiency Depth (ft) Grates Flow Efficiency (cfs) Observed Regression UDFCD New 65 0.333 1 5.14 0.61 0.51 0.56 66 0.501 1 21.36 0.28 0.28 0.39 67 0.999 1 126.89 0.14 0.16 0.25 80 0.333 1 3.74 0.50 0.49 0.63 81 0.501 1 11.54 0.35 0.38 0.40 82 0.999 1 95.55 0.17 0.18 0.20 143 0.333 1 15.28 0.29 0.36 0.40 144 0.501 1 33.98 0.21 0.24 0.27 145 0.999 1 176.61 0.12 0.14 0.07 174 0.333 1 7.95 0.55 0.41 0.46 175 0.501 1 22.29 0.31 0.31 0.29 176 0.999 1 162.89 0.13 0.15 0.06 224 0.333 1 13.09 0.33 0.38 0.33 225 0.501 1 37.88 0.20 0.23 0.18 226 0.999 1 141.23 0.14 0.15 -0.08 263 0.333 1 7.48 0.65 0.43 0.37 264 0.501 1 28.06 0.32 0.29 0.21 265 0.999 1 129.38 0.16 0.16 -0.05 68 0.333 2 5.30 0.71 0.65 0.78 69 0.501 2 23.23 0.34 0.34 0.58 70 0.999 2 124.70 0.21 0.20 0.34 77 0.333 2 3.27 0.57 0.66 0.84 78 0.501 2 11.22 0.40 0.49 0.73 79 0.999 2 94.46 0.20 0.23 0.37 140 0.333 2 14.65 0.36 0.46 0.59 141 0.501 2 32.73 0.27 0.31 0.38 142 0.999 2 177.08 0.19 0.18 0.13 185 0.333 2 7.95 0.65 0.52 0.69 186 0.501 2 23.69 0.37 0.38 0.47 187 0.999 2 163.67 0.20 0.19 0.15 221 0.333 2 13.25 0.38 0.48 0.48 222 0.501 2 36.63 0.25 0.29 0.26 223 0.999 2 144.97 0.20 0.19 -0.04 266 0.333 2 8.73 0.68 0.52 0.57 267 0.501 2 26.50 0.38 0.37 0.35 268 0.999 2 130.94 0.25 0.20 0.01 71 0.333 3 4.52 0.83 0.78 0.89 72 0.501 3 23.69 0.40 0.39 0.73 73 0.999 3 125.80 0.27 0.23 0.45 74 0.333 3 3.43 0.64 0.74 0.92 75 0.501 3 11.22 0.47 0.56 0.86 76 0.999 3 93.84 0.28 0.26 0.53 137 0.333 3 13.25 0.45 0.55 0.74 138 0.501 3 39.91 0.31 0.33 0.49 147
Page 1:
HYDRAULIC EFFICIENCY OF GRATE AND C
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TABLE OF CONTENTS LIST OF FIGURES .
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LIST OF FIGURES Figure 1-1: Map of
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Figure 5-7: Predicted vs. observed
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LIST OF TABLES Table 2-1: Summary o
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LIST OF SYMBOLS, UNITS OF MEASURE,
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S c , Sc, cross slope cross (or lat
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ID mag meter No. QC ® R5 R9 R12 R1
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1 INTRODUCTION A research program w
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1-1 often require use of these thre
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2 LITERATURE REVIEW Urban storm dra
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• All grates showed patterns of i
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Q = Q w + Q s Equation 2-1 where: 2
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Inlet Name Bar P-1-7/8 Bar P-1-7/8-
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2.2.3 Curb Opening Inlets Curb open
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2.3 Manning’s Equation Uniform fl
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where: q 1 = dependent parameter; q
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Q ⎛ L L Qw ⎞ = f ⎜ , ⎟ Equa
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Headbox Pipe Network Inlets Street
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capacity. A similar study performed
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Table 3-3: Test matrix for 0.33-ft
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Table 3-5: Test matrix for 1-ft pro
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Solid Plexiglas ® was milled to pr
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Figure 3-10: Triple No. 13 combinat
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Figure 3-16: Single No. 16 combinat
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Figure 3-22: Single No. 16 combinat
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Note Safety Bar Figure 3-28: R5 wit
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Flow entering and exiting the model
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Following a standardized testing pr
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4 DATA AND OBSERVATIONS Testing res
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Figure 4-2: Type 16 combination-inl
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45 40 35 Captured flow (cfs) 30 25
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5 ANALYSIS AND RESULTS Data selecte
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likely due to the nature of the ori
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1 Observed 0.9 0.8 0.7 0.6 0.5 0.4
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Total flow (Q) is known from the ob
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Observed 1 0.9 0.8 0.7 0.6 0.5 0.4
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1 0.9 Observed 0.8 0.7 0.6 0.5 0.4
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The second Pi group is the square o
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Table 5-2: Empirical equations for
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Agreement is best at the smallest f
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Efficiency/base efficiency 2.2 2 1.
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were typically seen at higher flow
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Average difference in calculated ef
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Depth (ft) Table 5-3: Efficiency er
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test data for typical design depths
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Observed efficiency 1 0.9 0.8 0.7 0
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7 REFERENCES Bos, M. G. (1989). Dis
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(P-1-7/8 grate does not have the 10
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Figure A-3: Curved vane grate (UDFC
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Figure A-5: 30º-tilt bar grate (UD
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APPENDIX B ON-GRADE TEST DATA 93
Page 114 and 115: Test ID Number Configuration Table
Page 116 and 117: Table B-3: 2% and 1% on-grade test
Page 118 and 119: Test ID Number Configuration Longit
Page 120 and 121: Test ID Number Configuration Table
Page 122 and 123: Table B-7: Additional debris tests
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Page 126 and 127: For the additional sump tests, only
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Page 130 and 131: (a) (b) Figure D-2: Type 16 inlet s
Page 132 and 133: (a) (b) (c) Figure D-4: Type R curb
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Page 136 and 137: Extent of Flow Station (x) Position
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Page 140 and 141: Test ID Number depth (ft) Tw (ft) A
Page 142 and 143: Table F-2: Additional parameters fo
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Page 152 and 153: Plot of rstudent*pred. Legend: A =
Page 154 and 155: The REG Procedure Model: MODEL1 Dep
Page 156 and 157: Plot of logE*pred. Legend: A = 1 ob
Page 158 and 159: Plot of rstudent*pred. Legend: A =
Page 160 and 161: 142
Page 162 and 163: 144
Page 166 and 167: Test ID Number Depth (ft) Grates Fl
Page 168 and 169: Test ID Number Depth Length Flow Ef
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